For trail hiking: 150-300 lumens. Technical terrain at night: 300-600. Search and rescue: 600+. Camp tasks: 50-100. More lumens means shorter battery life.
❓ Rechargeable vs replaceable batteries?
Rechargeable (USB) is more economical and eco-friendly for regular use. Replaceable (AAA) batteries are available anywhere for emergencies. Some headlamps support both.
❓ What does IPX rating mean for headlamps?
IPX4: splash-resistant. IPX6: withstands heavy rain. IPX7: submersible to 1 meter for 30 minutes. IPX8: submersible beyond 1 meter. IPX7 covers most outdoor needs.